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In this paper, it is shown that we can reconstruct an intuition of Boolean algebra in Mesopotamian divination with different omen series organized as catalogues. Each separate omen was formulated as a conditional statement “if a sign p, then an event q” so that it has only the positive truth value in the Boolean algebra. This means that omen catalogues can be considered as a dataset containing some logical axioms (only true propositions). It is the earliest form of binary thinking which was logically correct.
Schumann et al. (Mon,) studied this question.